Understanding Moisture Damage

HOW DOES HUMIDITY CAUSE MOISTURE DAMAGE?

The relative humidity of an air-water mixture is defined as the ratio of the partial pressure of water vapor (H2O) in the mixture to the saturated vapor pressure of water at a given temperature. Relative humidity is normally expressed as a percentage and is calculated by using the following equation:

RH (Relative Humidity) is the quantified unit used to describe the level of humidity.

Different types of moisture damages occur at different humidity levels. The average relative humidity level can be found by looking to the local weather reports in your area. Maintenance of most objects below 50% RH at room temperature can protect items from moisture caused damages.

What is condensation?

Condensation is water vapor suspended in the air settling on cool surfaces.

Photography, cinematography, and other equipment collects moisture while in the field. Temperature changes is inevitable when that equipment is stored and transported to a cooler/warmer environment causing condensation or frosting to occur. In the long term, damages will incur to a hefty price tag fixing it

Leather can get mouldy when its constantly expose to humidity of more than 70%. Moreover, a high ambient temperature and lack of air circulation will contribute to growth of fungi and bacteria. Ideally, leather should be stored at room temperature and a humidity of 40-55%.